Clutch mechanism.



No. 714,990. 'Patented nec. 2, |902.

H. wYMAN.

CLUTCH MECHANISM.

- (Appncation mea Apr. 2e. 1902.)

2 Sheets-Sheet I.

(No Model.)

Nn. 714,990. Patented Dec. 2. |902.

H. WYHAN..

CLUTCH MECHANISM.

(Applictiun tiled Apr. 26, 1902.)

(No Model.) 2 Sheets-Shut 2.

UNTTED STATES PATENT OFFICE;

HORACE WYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMP- TON du KNOVLES LOOM WORKS, OF IVORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

CLUTCH lVIECHANISIVl.

SPECIFICATION forming part of Letters Patent No. 714,990, dated December 2, 1902.

Application filed April 26, 1902.

To @ZZ whom, it may concern:

Be it known that I, HORACE IVYMAN, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusettahave invented certain new and useful Improvements in Clutch Mechanism, of which the following is a specification.

My invention relates to mechanism to be used in looms for automatically unclutching 1o and then clutching at predetermined intervals a driven mechanism from the driver. I have in this instance shown myimprovements applied to the pattern mechanism of a loom and adapted to automatically unclutch the x5 rotating pattern -indicating mechanism, to

stop it with its indicators in operative position while the rest of the loom continues its movement, and to automatically clutch and cause the pattern-indicating mechanism to zo rotate at the proper time.

The object of myinvention is to provide an improved mechanism for automatically unclutching one portion of a mechanism from another and then clutching them again at predetermined intervals, and is particularly adapted to be applied to parts of a loom-for example,a double-actingdobby provided with a double-index pattern-chain,whereby the rotation of the chain can be stopped while the 3o weaving continues with a double index.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is an elevation of a driver-shaft and connections to a pattern-chain cylinder for operating the same with my improvements applied thereto; The pattern-cylinder and the horizontal shaft carrying a bevel-pinion are shown in section;

4o and Fig. 2 corresponds to Fig. 1, but shows some of the parts in their opposite position.

In the accompanying drawings, l is the framework, which has a bearing 2 for a vertical shaft 2, having a bevel-gear 3 fast on its lower end and meshing with and driven by a bevel-gear 4L on a driven shaft On the upper end of said vertical shaft is fast the lower member 6 of the clutch, having in this instance a recess 6 to receive the projection 7 5o on the upper or other member 7 of the clutch,

Serial No. 104,877. (No modal.)

which is splined on avertical shaft 8, having a bearing 9 on the framework 1. A spiral spring 8 encircles the shaft 8 and acts to force down the clutch member 7. On the upper end'of the shaft 8 is fast a bevel-gear 10, 55 which meshes with and drives a bevel-gear (not shown) fast. on the end of the horizontal shaft 11, having bearingsin the framework 1. On the opposite end of the shaft 11 is fast a pinion l2, which meshes with and drives a 6o gear 13 fast on the shaft 14, carrying the pattern-cylinder 15, which has thereon a pattern surface or chain 16, carrying a series of indications 17 in the usual way.

Extending over the pattern-cylinder 15 is 65 an indicator-lever 18, pivotally mounted at one end on a rod 19-and pivotally attached at its other end by a pin 2O to the upper end of a connector or link 21. The lower end of the connector or link 21 is pivotally attached by 7o a pin 22 to one end of a lever23. The opposite end of the levelI 23 is pivotally mounted on a pin 24, secured to the framework l. The lever 23 is provided with a pin or roll 23', (shown by broken lines,) which is adapted to extend into an annular groove or recess 7 in the upper clutch member 7 and to engage and travel on the cam-surface 7" on the upper clutch member'. The pin 22, which connects the link 2l to the lever 23, extends in a ver- 8o tical slot 25 in an angle-lever 25, pivoted on a pin 26, secured to the framework 1. A side slot 25"' leads out from the vertical slot 25. The opposite end of the-angle-lever 25 has attached thereto the upper end of a spring 27. 8 5 The lower end of said spring is attached to a stationary part. The lower end of a connector 28 is also attached to the end of the angle-lever 25. Said connector 28 extends to the dobby or other pattern mechanism, (not 9o shown,) which controls the movement of the angle-lever 25.

From the above description, in connection with the drawings, the operation of my improvements will be readily understood by 9 5 those skilled in the art. With the parts in the position shown in Fig. 1 the two members 6 and 7 of the clutch mechanism are in clutch, and the pattern-cylinder and the pattern-indicators thereon are caused to rotate. When Ioo one of the indicators, as 17, in the rotation of the pattern-cylinder comes under the roll 18 on the lever 18, said lever is raised, and through link 21 the lever 23 is raised, so that the pin 23 thereon will extend into the upper part of the annular recess 7l in the clutch member 7, and the projecting end of the pin 22 at the end of the lever 23 will extend in the upper part of the vertical slot 25 and allow the spring 27 to act to move the anglelever 25 and cause the side slot 25 to receive the pin 22, and thus lock the lever 23 in its raised position. The continued revolution of the clutch member 7, through its engagement with the clutch member 6, will cause the cam portion 7 to ride up on the pin 23', and thus disconnect the member 7 of the clutch from the member 6, as shown in Fig. 2, and cause the rotation of the shaft 8 to cease, the rest of theloom continuing to operate. When on an indication from the dobby or other pattern-surface through the connector 28 the angle-lever 25 is moved on its pivot-point 26 to move the pin 22 out of the side slot 25" and into the upright slot 25 and the patternindicator on the pattern cylinder having passed from under the roll 18 on the lever 18, the spring 8', encircling the shaft 8, will act to force down the upper clutch member 7, so that in the continued revolution of the lower clutch member 6 the parts will be clutched and the shaft8 and the parts driven thereby again put into operation.

It will be understood that the details of construction of my improvements may be varied from what is shown and described, and they may be adapted to be applied to and used in connection with any other mechanism Which it is desired to automatically unclutch and then clutch at predetermined intervals.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A pattern-cylinder carrying a series of indicators, a rotating clutch member, a shaft intermediate said clutch member, and said cylinder, a longitudinally movable clutch member on said shaft, having a cam-surface thereon, a lever or device adapted to extend in the path of said cam-surface when said device is raised, to unclutch or move apart the clutch members, and connections intermediate the pattern-cylinder and the lever, substantially as shown and described.

2. A pattern-cylinder carrying a series of indicators, a rotating clutch, comprising two clutch members, one movable longitudinally and having a cam-surface thereon, and intemediate connections to the pattern-cylinder, a lever having a projection thereon extending in the path of said cam-surface, connections from said lever to one of the indicating-levers extending over the pattern-cylinder, said indicator-lever controlling the movement ot' said lever which operates the clutch, substantially as shown and described.

3. A pattern-cylinder carrying a series of indicators, connections intermediate said pattern-cylinder and a clutch, and said clutch, comprising two members, one movable longitudinally and having a cam-surface, a lever having a projection adapted to extend in the path of said cam-surface, connections from said lever to an indicatorlever extending over the pattern-cylinder, and said indicatorlever, and means for holding the lever engaging the clutch member in its raised position, substantially as shown and described.

4. A pattern-cylinder carrying a series of indicators, and connections intermediate said pattern-cylind er and aclutch, and said clutch comprising two members, one movable longitudinally, and having a cam-surface thereon, and a device having a projection thereon adapted to extend in the path of said carnsurface, and connections from said device to an indicator-lever extending over the patterncylinder, and said indicator-lever, and means for holding the device engaging the clutch member, in its raised position, and for releasing said device, substantially as shown and described.

HORACE WYMAN.

Witnesses:

J. C. DEWEY, M. I-IAAs. 

